870538839 has 32 divisors (see below), whose sum is σ = 1259525376. Its totient is φ = 532815360.

The previous prime is 870538831. The next prime is 870538853. The reversal of 870538839 is 938835078.

It is a happy number.

It is not a de Polignac number, because 870538839 - 2³ = 870538831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 870538791 and 870538800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870538831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 364429 + ... + 366809.

It is an arithmetic number, because the mean of its divisors is an integer number (39360168).

Almost surely, 2^870538839 is an apocalyptic number.

870538839 is a deficient number, since it is larger than the sum of its proper divisors (388986537).

870538839 is a wasteful number, since it uses less digits than its factorization.

870538839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 870538839 is about 29504.8951701239. The cubic root of 870538839 is about 954.8373173909.

The spelling of 870538839 in words is "eight hundred seventy million, five hundred thirty-eight thousand, eight hundred thirty-nine".